Granulosa cell tumor and cancer are commonly found in ovarian granulosa cell tumor and ovarian cancer, the difference is different etiology, different symptoms and different treatment. 1. Different etiology: granulosa cell tumor is related to gene methylation, chromosome microsatellite instability, etc. Ovarian cancer may be caused by endocrine factors, hereditary and familial factors, and environmental factors. 2. Different symptoms: Ovarian granulosa cell tumor is mainly manifested as irregular vaginal bleeding in clinic, and there are also symptoms such as abdominal pain, abdominal distension, abdominal mass, etc. Ovarian cancer is mostly asymptomatic in the early stage, and with the development of lesions, gastrointestinal symptoms such as discomfort in the lower abdomen, abdominal distension, loss of appetite, etc., and some patients may suffer from emaciation and anemia. 3. Different treatments: patients with ovarian granulosa cell tumor can undergo radical surgical resection. The treatment of ovarian cancer is mainly based on surgery, and then auxiliary radiotherapy and chemotherapy and other comprehensive treatments. Patients with ovarian granulosa cell tumor and ovarian cancer are recommended to go to the hospital in time for consultation and standardized treatment according to the doctor’s instruction after clarifying the cause of the disease.